Last reviewed: 10 September 2026. Manufacturers and dealers have argued for years over one recurring question: does receiving a post-sale discount credit note automatically force the buyer to reverse input tax credit? Field officers frequently answered yes to any credit note received, regardless of whether GST itself was adjusted. CBIC Circular No. 251/08/2025-GST dated 12 September 2025 has now drawn a clear line between a financial (commercial) credit note and a tax credit note under Section 34, and settled two further questions that were driving demands on dealer networks. Dealers and distributors sitting on ITC-reversal demands relating to volume rebates and scheme discounts should revisit their position against it — and read it alongside the substitution of Section 15(3)(b) enacted by the Finance Act, 2026, which changes the ground rules for the underlying discount itself once it is brought into force.
Start with Section 15(3)(b), not Section 34
Post-sale discounts are not a regime outside the valuation rules. Section 15(3) is the provision that decides whether a discount comes out of the value of supply at all, and it has two limbs. Clause (a) covers a discount given at or before the time of supply and recorded in the invoice. Clause (b) is the post-supply limb — it deals precisely with a discount given after the supply has been effected, and until the Finance Act, 2026 amendment is notified it permits exclusion from value only where all three conditions are met: the discount is established in terms of an agreement entered into at or before the time of supply, it is specifically linked to the relevant invoices, and the input tax credit attributable to it is reversed by the recipient. That last condition is the origin of the entire ITC-reversal question.
The practical consequence is often missed. A year-end volume rebate that was not agreed before the supply and cannot be tied to specific invoices does not satisfy Section 15(3)(b), so the supplier has no lawful basis to reduce its taxable value for it at all. The manufacturer is not choosing between two equally available instruments; on those facts the only correct instrument is a financial credit note that leaves GST alone.
The underlying dispute: two kinds of credit notes
Under Section 34 of the CGST Act, a supplier who reduces the taxable value or tax charged on an original invoice — because goods are returned, a deficiency is found, or a discount qualifying under Section 15(3)(b) is given — must issue a credit note, and where that credit note reduces the output tax payable, the recipient's input tax credit must be reduced proportionately to match. The friction arises because, commercially, manufacturers routinely give dealers post-sale or secondary discounts — volume rebates, scheme discounts, year-end incentives — that were not known or agreed at the time of the original supply. Many of these are settled through a credit note that adjusts only the commercial/accounting relationship between manufacturer and dealer, without touching the GST charged on the original invoice at all: the supplier does not reduce its output tax liability, and correspondingly there is, in principle, nothing for the recipient to reverse. These are commonly described as “financial” or “commercial” credit notes, issued for accounting purposes only, as distinct from a GST/tax credit note issued formally under Section 34 that does reduce output tax.
Why this became a live dispute
In practice, a significant number of field assessments did not draw this distinction carefully. Some officers treated the mere fact that a dealer had received any credit note referencing a discount as sufficient grounds to demand proportionate ITC reversal, without first establishing whether the corresponding supplier had in fact reduced its GST output liability. This created a real compliance trap: dealers who had done nothing wrong — who had simply received a discount that their manufacturer had structured, correctly, as a financial adjustment outside the GST chain — were nonetheless facing reversal demands running into lakhs of rupees across a dealer network, purely because the credit note's language did not clearly rule out a GST adjustment.
What Circular 251/08/2025-GST clarifies — all three limbs
Circular No. 251/08/2025-GST dated 12 September 2025 was issued on the 56th GST Council's recommendation and decides three separate questions. Most commentary reports only the first; the other two are the ones now driving notices on dealer networks, and both are helpful to the taxpayer.
One — ITC reversal on financial credit notes. Where a financial or commercial credit note is issued, one that does not adjust the GST component and leaves the supplier's output tax liability unchanged, the recipient is not required to reverse input tax credit merely because such a credit note was received. Since the supplier has not reduced its original tax liability, there is nothing for the recipient to match. Reversal is triggered only where the credit note is a genuine Section 34 tax credit note that actually reduces the taxable value and the GST charged on the original supply.
Two — a post-sale discount is not consideration for a supply by the dealer. The circular confirms that a discount given by a manufacturer to a dealer is not consideration for any supply of service by the dealer back to the manufacturer. This holds even where the dealer passes the benefit on and sells to the end customer at a reduced price: the dealer is simply trading on its own account, and the transaction between manufacturer and dealer remains a principal-to-principal sale. Demands treating the rebate itself as a taxable “sales promotion service” do not survive this paragraph.
Three — where promotional activity is taxable. GST applies only where the dealer undertakes a defined activity for the manufacturer — advertising campaigns, co-branding exercises, customisation, special sales drives, exhibitions or customer support services — under a written agreement carrying identifiable consideration for that activity. The test is a specific, agreed, separately compensated service, not a general expectation that the dealer will promote the brand. Manufacturers running dealer incentive schemes should keep the rebate documentation and any promotional-services agreement strictly separate, because it is the blurring of the two that invites the demand.
Financial (commercial) credit note vs tax credit note compared
A word on terminology, because field correspondence frequently muddles it: “financial credit note” and “commercial credit note” mean the same thing — the document that does not touch GST. The instrument that does adjust GST is the tax credit note under Section 34. Using “commercial” for the Section 34 note, as some notices do, inverts the standard usage and is worth correcting in the reply itself.
| Feature | Financial (commercial) credit note | Tax credit note under Section 34 |
|---|---|---|
| GST/output tax adjusted by supplier | No — output tax liability unchanged | Yes — output tax reduced |
| Effect on recipient's ITC | No reversal required (Circular 251/08/2025-GST) | Proportionate reversal required to match reduced tax |
| When it is the correct instrument | Volume rebates, scheme incentives and year-end discounts that fail the Section 15(3)(b) conditions — no pre-supply agreement or no invoice linkage | Returns, deficiency, price reduction, or a post-supply discount that satisfies every limb of Section 15(3)(b) |
| Documentation needed | Explicit note that value/GST is unchanged, issued for accounting purposes only, with the scheme or rebate letter retained alongside | Reference to Section 34, revised taxable value and tax clearly stated, plus the pre-supply agreement and invoice-wise linkage on file |
Worked example
A dealer purchases goods worth ₹50 lakh (plus GST of ₹9 lakh at 18%) from a manufacturer during the year and claims the full ₹9 lakh as input tax credit. At year-end, the manufacturer grants a volume-linked scheme discount of ₹3 lakh and issues a credit note for that amount. If this credit note explicitly states that it is issued for accounting/commercial purposes only, that the taxable value and GST charged on the original invoices remain unchanged, and the manufacturer's own GST returns confirm its output tax was not reduced, then under Circular 251/08/2025-GST the dealer is not required to reverse any part of the ₹9 lakh ITC already claimed — the ₹3 lakh is simply a commercial rebate outside the GST chain.
The alternative branch is available only on different facts, and this is the point most often got wrong. For the manufacturer to instead reduce the taxable value to ₹47 lakh and cut GST by ₹54,000 (18% of ₹3 lakh), the discount must satisfy Section 15(3)(b) — established in terms of an agreement entered into at or before the time of supply, specifically linked to the relevant invoices, and with the attributable ITC reversed by the dealer. A rebate simply declared at year-end on volumes achieved meets none of the first two conditions, so the value-reducing route is not open and the ₹54,000 reversal question never arises. Where the discount was agreed upfront under a dealer scheme and can be traced invoice-wise, the manufacturer may take that route, and the dealer must then reverse the ₹54,000 to match. The rupee amount of the discount is identical in both cases; what differs is whether the discount qualified under Section 15(3)(b) in the first place, and therefore whether the GST component could lawfully be adjusted at all.
What changes under the Finance Act, 2026 — and what has not changed yet
The 56th GST Council, meeting on 3 September 2025, recommended dismantling the conditions in Section 15(3)(b) that generate most of this litigation, and recommended rescinding Circular No. 212/6/2024-GST dated 26 June 2024 alongside. The Finance Act, 2026 gives effect to that. Section 15(3)(b) is substituted so that a post-supply discount may be excluded from the value of supply without any pre-supply agreement and without linkage to specific invoices, on two conditions only: the supplier has issued a credit note, and the recipient has reversed the input tax credit attributable to the discount in accordance with Section 34. Section 34(1) is amended in parallel to list a Section 15(3)(b) discount expressly as a ground for issuing a credit note.
Two cautions, both practical. First, these amendments await a commencement notification and were not in force as at the date of this review — until that notification issues, the three-condition test described above continues to govern, and a credit note issued on the assumption that the new provision is already live will not hold. Second, the amendment does not abolish ITC reversal; it makes reversal by the recipient the price of the supplier's value reduction, in every case. Once notified, the practical effect for a dealer network is that more year-end rebates become capable of being routed through tax credit notes — and each one that is will carry a matching reversal obligation for the dealer that a financial credit note today does not. Manufacturers should decide, deliberately and in writing, which route each scheme will take before the change takes effect, rather than discovering the answer at the next audit.
Common mistakes and red flags
- Assuming every credit note received from a supplier automatically requires proportionate ITC reversal, without checking whether GST was actually adjusted.
- Treating Section 15 as a separate regime that has nothing to say about post-sale discounts. Section 15(3)(b) is the post-supply discount provision, and whether its conditions are met decides whether the supplier could lawfully reduce value at all.
- Issuing or accepting a value-reducing tax credit note for a year-end rebate that was never agreed before the supply and cannot be linked invoice-wise — the reduction fails Section 15(3)(b), and both sides are exposed.
- Acting on the Finance Act, 2026 substitution of Section 15(3)(b) before its commencement notification has been issued.
- Letting a rebate scheme and a promotional-services agreement sit in the same document, which is what converts a non-taxable discount into an arguable “sales promotion service” under the third limb of Circular 251/08/2025-GST.
- Manufacturers issuing discount credit notes with ambiguous wording that neither confirms nor denies a GST adjustment, leaving dealers exposed to field interpretation.
- Dealers failing to cross-check the supplier's own GSTR-1/GSTR-3B filings to confirm that output tax was, or was not, actually reduced for the relevant period.
- Treating Circular 251/08/2025 as blanket relief from all reversal obligations — it does not exempt genuine Section 34 tax credit notes, only financial/commercial ones.
- Not retaining the underlying scheme/rebate agreement alongside the credit note, which helps establish the commercial (non-GST) character of the adjustment if questioned later.
What businesses should do now
Dealers and distributors who have received post-sale discount credit notes, or who are facing a live ITC-reversal demand relating to them, should pull the relevant credit notes and check the exact wording: does it state, in terms, that the taxable value and GST charged remain unchanged and that the note is issued for accounting purposes only? If so, that document is now the primary defence against a reversal demand under Circular 251/08/2025, and it is worth cross-verifying against the supplier's own returns for the period. Manufacturers, for their part, should review and standardise the credit-note language used across their dealer network so that every financial/commercial discount note is unambiguous on its face — this protects the dealer base from field disputes and reduces the manufacturer's own exposure to queries about inconsistent documentation. Separately, pull every dealer promotional or incentive agreement and check whether it identifies a specific activity with specific consideration; if it does not, the third limb of the circular is on your side, and if it does, the GST on that activity should already be being paid.
Where a reversal demand has already been raised on old periods, Circular 251/08/2025-GST is clarificatory of how Sections 15(3)(b) and 34 have always operated rather than a change in the law, and CBIC circulars of that character are ordinarily applied to open periods. It is therefore a sound basis to seek reconsideration or to rely on in a reply to a notice, alongside the specific facts of the credit notes involved and the supplier's own GSTR-1 and GSTR-3B for the period. Finally, keep the Finance Act, 2026 amendment on the review calendar: once its commencement notification issues, the credit-note policy set today will need revisiting, because rebates that currently sit outside the GST chain may then be routed through tax credit notes with a matching reversal obligation on the dealer.
Frequently asked questions
Do I have to reverse ITC every time I receive a discount credit note from a supplier?
Not necessarily. Under CBIC Circular No. 251/08/2025-GST dated 12 September 2025, reversal is required only if the credit note actually reduces the supplier's GST/output tax on the original supply. A financial (commercial) credit note that leaves the GST component unchanged does not trigger ITC reversal merely because it was received — the supplier has not reduced its own liability, so there is nothing for you to match.
What is the difference between a financial credit note and a tax credit note under Section 34?
A financial (commercial) credit note adjusts the commercial relationship between the parties, such as a rebate or scheme incentive, without changing the taxable value or GST charged on the original invoice. A Section 34 tax credit note formally reduces the taxable value and the GST charged, and it is this reduction that triggers proportionate ITC reversal for the recipient.
What does Circular 251/08/2025 actually clarify?
Three things. First, a recipient need not reverse ITC on a financial or commercial credit note, since the supplier's output tax is unaffected; reversal follows only a Section 34 tax credit note that actually reduces output tax. Second, a post-sale discount from a manufacturer to a dealer is not consideration for any supply of service by the dealer back to the manufacturer, including where the dealer passes the benefit on to the end customer in a lower price. Third, GST applies only where the dealer performs a defined promotional activity — advertising campaigns, co-branding, customisation, special sales drives, exhibitions or customer support — under a written agreement carrying identifiable consideration for that activity.
How can a dealer prove that a credit note did not involve a GST adjustment?
The credit note itself should explicitly state that it is issued for accounting/commercial purposes only and that the taxable value and GST charged on the original invoice remain unchanged. This can be cross-checked against the supplier's GSTR-1 and GSTR-3B filings for the relevant period, which should show no corresponding reduction in output tax.
Does this circular apply to discounts that were already known at the time of the original sale?
A discount given at or before the time of supply and recorded in the invoice falls under Section 15(3)(a) and simply comes out of the value, so no credit note and no reversal question arises. Section 15(3)(b) is the post-supply limb, and it is not a regime separate from Section 15: it allows a discount given after the supply to be excluded from value where, at present, it was established by an agreement entered into at or before the time of supply, is specifically linked to the relevant invoices, and the recipient reverses the attributable ITC. The Finance Act, 2026 substitutes that clause to drop the pre-agreement and invoice-linkage conditions, leaving only the credit note and the reversal — but that substitution awaits a commencement notification and is not yet in force.
Should manufacturers change how they word their discount credit notes?
It is advisable. Standardising the language across a dealer network to clearly state whether a discount credit note does or does not adjust GST/output tax reduces ambiguity, protects dealers from field disputes over ITC reversal, and reduces the manufacturer's own risk of inconsistent treatment being questioned on audit.
If your dealer network is facing ITC-reversal demands on post-sale discount credit notes, or you want your credit-note documentation aligned with Circular 251/08/2025, we can review your paperwork and represent you in replies to notices on this issue.
GST Advisory Services GST Notice Handling Talk to usThis article is general information for educational purposes, not a legal opinion on any specific case or notice. GST law, circulars and judicial positions referenced above are subject to change and to the final orders of the relevant courts and authorities; verify the current status before acting, and consult a qualified professional with your specific facts before deciding how to respond to any notice.